Fix error breaking the script when no listContainer is found.
Fix error breaking the script when no listContainer is found.

In case of multiple list the script break when can't find the id of the listContainer. This fix prevent the break, stopping the execution of the rest of the script.

PenguinOfWar/list.js,jinxuan/list.js,lukevance/list.js,modulexcite/list.js,PenguinOfWar/list.js,lukevance/list.js,slifszyc/list.js,exsodus3249/list.js,giangnguyennet/list.js,BenHeubl/list.js,urkle/list.js,Gummibeer/list.js,jmcarp/list.js,kesla/list.js,kublaj/list.js,birdwell/list.js,kublaj/list.js,slifszyc/list.js,Moykn/list.js,oleduc/list.js,DemocracyOS/list.js,oleduc/list.js,exsodus3249/list.js,kesla/list.js,Moykn/list.js,myappleguy/list.js,jmcarp/list.js,myappleguy/list.js,modulexcite/list.js,BenHeubl/list.js,jinxuan/list.js,urkle/list.js,javve/list.js,DemocracyOS/list.js,hungerburg/list.js,birdwell/list.js,Gummibeer/list.js,hungerburg/list.js,javve/list.js,giangnguyennet/list.js